New to CentOS and just converted and older desktop to a server running 6.5_x86-64.
I am trying to mount a Buffalo NAS using the "Even-better method" explained in the wiki.
All seem to go ok and autofs restarts with no error messages.

The object is to mount "share" from the nas to /mnt/xl1b4/, which it appears to do as indicated below; however, when I try to access the share, it returns the "No such file" message.

#
# Sample auto.master file
# This is an automounter map and it has the following format
# key [ -mount-options-separated-by-comma ] location
# For details of the format look at autofs(5).
#
/misc /etc/auto.misc
#
# NOTE: mounts done from a hosts map will be mounted with the
# "nosuid" and "nodev" options unless the "suid" and "dev"
# options are explicitly given.
#
/net -hosts
#
# Include central master map if it can be found using
# nsswitch sources.
#
# Note that if there are entries for /net or /misc (as
# above) in the included master map any keys that are the
# same will not be seen as the first read key seen takes
# precedence.
#
+auto.master
/mnt/xl1b4 /etc/auto.xl1b4 --timeout=600 --ghost

On reboot, "share" shows as mounted on /mnt/xl1b4 but on attempt to access, reported as no such file or directory.

You used the "--ghost" option for the automounter map, so the fact that "ls /mnt/xl1b4" returns "share" is no indication that the directory is mounted.

The "df" command will show you mounted filesystems and you can also look in /etc/mtab.

You should look in /var/log/messages just after you try accessing /mnt/xl1b4/share and just after restarting autofs. I think that it is unlikely that no relevent information is being logged -- I see that you did already look there, but perhaps you missed something?